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Finding the Fourth Proportional to 358.38, 537.24 and 142.08

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Solution

The fourth proportional to 358.38, 537.24 and 142.08 is: 212.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.38 : 537.24 = 142.08 : x
  2. Step 2: Convert to fraction form
    358.38/537.24 = 142.08/x
  3. Step 3: Cross multiply
    358.38x = 537.24 × 142.08
  4. Step 4: Simplify right side
    358.38x = 76,331.06
  5. Step 5: Solve for x
    x = 76,331.06/358.38
  6. Step 6: Final answer
    x = 212.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.